"Too late! you get both" Kyle shouted at the phone. "For your transformation, you will see how life is like as me! Your current body will become the perfect girl, with magical powers. You will exchange bodies with the next person you talked to, which is me! As or your dare, you will talk to me once I end this sentence!"
Jennifer's body started improving, turning into Kyle's perfect girl, but once Kyle finished speaking, Jennifer picked up the phone and not so smartly said "Transform or dare!" But the previous curse did it's work. Suddenly, both Jennifer and Kyle blacked out, then Kyle awoke in Jennifer's now perfect body and Jennifer in Kyle's body. Although it was Jennifer who said transform or dare, but now with Kyle in her body, she must answer and be transformed again.
Jennifer in Kyle's body quickly said "Dare" and Kyle in Jennifer's body decided that he had gotten enough and said "I dare you to stay in that body for the rest of your life and cannot say transform or dare ever again!"
Both Jennifer and Kyle felt new memories surging into their mind. Kyle laughed girlishly in his new body as Jennifer and Jennifer sobbed in her new body, now Kyle.